Free Shit Army. Refers to the truly amazing number of people who will show up out of nowhere if something is being given away for free. Often but not exclusively refers to those getting their free shit from other people by way of government.

The FSA open-spigot federal spending game has been covering up a now-compounded 30% decline in GDP and when that spigot is dialed back, even a bit, you'll see recognition of what has really happened with a vengeance.

1)noun(Proper)Future Scientists of America. An elite organization of students clad in bright red FSA T-shirts who, according to their overlord Mr. Nakaue, are destined to rule the future world of Science.
2)interjection. Used to express enthusiasm for either success of failure in anything vaguely related to science.
3)verb. A codeword referring to the act of stalking.

1) "In this room are the Future Scientists of America."
2)Teacher: "...And Woodbridge did not win any medals at the CA State Science Fair."
Students: "FSA, bitch!"
3)"We should totally FSA tonight."